Pioneer Audio Visual Equipment offers Tripod Automatic Roll-back Spring Action. Pioneer Audio Visual Equipment manufactures projection screens of all sizes and types used for Front and Rear Data & Video LCD/DLP Projectors, Slide projectors and Overhead Projectors. The Tripod Automatic Roll-back Spring Action is a Tripod type screen which consists of the viewing surface rolled over a spring roller and encased in a barrel [box type casing]. There are no brackets but instead, a folding, mobile TRIPOD stand is incorporated in the design enabling mobility of the screen and setting up anywhere on flat ground.